Peen-hammer.



0. J. THIM] PEEN HAMMER. APPLICATION FILED JUNE 20, 1910.

983,325, Patented 1 12117, 1911.

J 7 4 J! J 1-5:? J a j 3 f 3 15% f WE 1 p 1 29 Z mg Witnesses I Inventorby f a. Attorney;

THE NORRIS PErERg co., WASHINGTDN, o. c.

QFFfCET.

CARL ZI'.

TI-IIM, OF LOGAN, UTAH.

. PEEN-HAMMER.

To all whom it may concern:

Be it known that I, CARL J. THIM, a subject of the King of Sweden,residing at Logan, in the county of Cache and State of Utah, haveinvented a new and useful Peen- Hammer, of which the following is aspecification.

It is the object of this invention to provide a hammer constructed witha double peen, whereby the operation of peening may be carried forwardwith increased rapidity.

Another object of the invention is to provide a two-part hammer head,the constituent elements of which are adapted to interlock, and to bekeyed together by the insertion of the hammer handle into the head.

In the drawings,Figure 1 is a top plan of the hammer head; Fig. 2 is aside elevation of one of the constituent parts of the head; and Fig. 3is a perspective of one of said parts.

The hammer head herein disclosed, consists of two like parts. Theseparts are denoted generally by the numeral 1. Each part 1 has a flatface 2, and beyond the ends of this flat face 2, the adjoining surfacesof the said part are curved, as denoted by the numeral 8, away from thelongitudinal center AB of the hammer head. The outer face 4: curves, atits ends, as shown at 5, toward the center line AB of the hammer, tointersect the curved faces 3; thus defining the striking edges 6 which,as shown, may if desired, be notched for peening. A lug 7 outstands fromthe flat face 2, intermediate the ends of said face, and in the face 2,adj acent the lug 7, there is a recess 8. One end wall of this recess 8is inclined, as shown at 9, to undercut the flat face 2. The end face 10of the lug 7 which is remote from the inclined end wall 9 of the recess8, is parallel to said end wall 9. The base 11 of the recess 8 isparallel to the outer face 12 of the lug 7 the base 11 and the outerface 12 being inclined at an acute angle to the flat face 2. That faceof the lug 7 which is disposed toward the end wall 9 of the recess 8 ischanneled, as shown at 1 1, the channel being curvilinear intransversesection.

In practical operation, when it is desired to assemble the two parts 1of the hammer head, the lug 7 of one part is introduced Specification ofLetters Patent.

Application filed June 20, 1910.

Patented Feb. '7, 1911.

Serial No. 567,950.

into recess 8 of the other part. The parts 1 are then slidlongitudinally upon each other, the face 2 of the one part contactingwith the face 2 of the other part, this sliding of the parts causing theend faces 10 of the lugs 7 to abut against the inclined end walls 9 ofthe recesses 8; all as shown in Fig. 1, wherein it will be seen that,when the parts are thus disposed, the said parts will be locked togetheragainst transverse separation, this interlocking resulting from the factthat the end walls 9 undercut the flat face 2. The channels 1 1 unite toform the handle aperture 15 of the head, and when t the handle isintroduced into this aperture 15, the handle will act as a key to holdthe parts 1 together. lVhen the handle is removed from the handleaperture 15, the parts 1 may he slid longitudinally upon each other topermit the lugs 7 to be removed from the recesses 8, this longitudinalsliding of the parts 1 serving to decrease the cross section of thehandle aperture 15. Since the cross sectional area of the handleaperture 15 must be decreased, if the parts are to be separated, it willbe seen that when the handle is mounted in the handle aperture, aseparation of the parts 1 is impossible.

The advantages incident to the construction are, that .since the hammeris provided with a double peen, the work may be carried forward withincreased rapidity. Moreover, should one of the parts which are denotedby the numeral 1, become injured, the same may readily be removed andreplaced by a perfect part, without throwing away the entire hammerhead. The parts 1 may readily be separated to provide for a redressingof the striking edges 6. The two parts 1 are identical in construction,and a single mold may be employed for fashioning both of said parts,there being no rights and lefts in the structure.

Having thus described the invention, what is claimed is As an article ofmanufacture, a block adapted to be employed in the construction of ahammer head, and provided with a flat face, with a lug outstanding fromthe intermediate portion of said flat face, and with a recess in theintermediate portion of said face adjacent the lug; one end wall of therecess being inclined to undercut the flat face, and the remote end faceof the lug being parallel to said end Wall; the base of the recess andthe outer face of the lug being parallel and inclined With respect tothe flat face; there being a channel in the other end Wall of the lug.

In testimony that I claim the foregoing as my own, I have hereto afiixedmy signature in the presence of two Witnesses.

CARL J. THIM.

Witnesses:

A. A.. LAW, M. L. HUM1 HREY.

